Perennial, scrambling or suberect. Rootstock creeping, stem sparsely pubescent. Leaf paripinnately compound, leaflets 8-12, 1-3 cm long, c. 5-12 mm broad, narrowly ovate, subobtuse or emarginate; stipules semi-sagittate toothed, the upper entire, tendril branched. Inflorescence a 2-5-flowered raceme, peduncle short. Calyx c. 7-9 mm long, glabrous or pubescent, mouth somewhat oblique, teeth unequal, the lowest subequal to the tube. Corolla reddish to lilac blue. Vexillum c. 12-15 mm long. Fruit 20-25 mm long, 7 mm broad, narrowly oblong, glabrous, 4-7-seeded.